公开(公告)号：US10943359B2

公开(公告)日：2021-03-09

申请号：US16323236

申请日：2017-08-03

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Chun Chi Wan

IPC: G06T7/593 ,  H04N13/383 ,  H04N13/144 ,  H04N13/128 ,  G06T5/00 ,  G06T5/50 ,  H04N13/00

Abstract: While a viewer is viewing a first stereoscopic image comprising a first left image and a first right image, a left vergence angle of a left eye of a viewer and a right vergence angle of a right eye of the viewer are determined. A virtual object depth is determined based at least in part on (i) the left vergence angle of the left eye of the viewer and (ii) the right vergence angle of the right eye of the viewer. A second stereoscopic image comprising a second left image and a second right image for the viewer is rendered on one or more image displays. The second stereoscopic image is subsequent to the first stereoscopic image. The second stereoscopic image is projected from the one or more image displays to a virtual object plane at the virtual object depth.

公开(公告)号：US10893261B2

公开(公告)日：2021-01-12

申请号：US16209445

申请日：2018-12-04

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan

IPC: H04N13/383 ,  H04N5/369 ,  H04N13/194 ,  H04N13/139 ,  H04N13/161 ,  G01S3/00 ,  H04N21/81 ,  H04N21/2343 ,  H04N13/178

Abstract: Based on viewing tracking data, a viewer's view direction to a three-dimensional (3D) scene depicted by a first video image is determined. The first video image has been streamed in a video stream to the streaming client device before the first time point and rendered with the streaming client device to the viewer at the first time point. Based on the viewer's view direction, a target view portion is identified in a second video image to be streamed in the video stream to the streaming client device to be rendered at a second time point subsequent to the first time point. The target view portion is encoded into the video stream with a higher target spatiotemporal resolution than that used to encode remaining non-target view portions in the second video image.

公开(公告)号：US10769754B2

公开(公告)日：2020-09-08

申请号：US16660548

申请日：2019-10-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Alexandre Chapiro ,  Chaitanya Atluru ,  Chun Chi Wan ,  Haricharan Lakshman ,  William Rozzi ,  Shane Ruggieri ,  Ajit Ninan

IPC: G06T3/00 ,  G06T19/00 ,  G06F3/01 ,  G02B27/01

Abstract: Peripheral-vision expanded images are streamed to a video streaming client. The peripheral-vision expanded images are generated from source images in reference to view directions of the viewer at respective time points. View direction data is collected and received in real time while the viewer is viewing display images derived from the peripheral-vision expanded images. A second peripheral-vision expanded image is generated from a second source image in reference to a second view direction of the viewer at a second time point. The second peripheral-vision expanded image has a focal-vision image portion covering the second view direction of the viewer and a peripheral-vision image portion outside the focal-vision image portion. The second peripheral-vision expanded image is transmitted to the video streaming client.

公开(公告)号：US10593292B2

公开(公告)日：2020-03-17

申请号：US15559798

申请日：2016-03-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Chun Chi Wan

IPC: G09G5/10

Abstract: An input media signal encoded with a portion of image data to be rendered with a target display device is received. It is determined, based on the portion of image data, whether a first power profile is to be applied to rendering the portion of image data with the target display device. In response to determining, based on the portion of image data, that the first power profile is not to be applied to rendering the portion of image data with the target display device, a second power profile is applied to rendering the portion of image data with the target display device.

公开(公告)号：US10443818B2

公开(公告)日：2019-10-15

申请号：US15596564

申请日：2017-05-16

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Chun Chi Wan ,  Timo Kunkel ,  Michael Eugene Miller

IPC: G02B5/20 ,  H01L27/32 ,  G02B5/22 ,  H01L51/56 ,  F21V9/40 ,  F21V9/08 ,  G02F1/1335 ,  B82Y20/00 ,  F21V9/30 ,  H04N13/334

Abstract: A display system comprises light sources configured to emit first light with a first spectral power distribution; light regeneration layers configured to be stimulated by the first light and to convert at least a portion of the first light and recycled light into second light, the second light comprising (a) primary spectral components that correspond to primary colors and (b) secondary spectral components that do not correspond to the primary colors; and notch filter layers configured to receive a portion of the second light and to filter out the secondary spectral components from the portion of the second light. The portion of the second light can be directed to a viewer of the display system and configured to render images viewable to the viewer.

公开(公告)号：US10262603B2

公开(公告)日：2019-04-16

申请号：US15128348

申请日：2015-03-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Chun Chi Wan

IPC: G09G3/36 ,  G02F1/1335 ,  F21V8/00 ,  G09G3/34 ,  G09G3/32

Abstract: A non-uniform illumination pattern is determined with a display panel of a display device. The non-uniform illumination pattern comprises different values of the one or more illumination properties in first and second spatial regions of the display panel. An illumination compensation pattern is generated based at least in part on the non-uniform illumination pattern. The illumination compensation pattern is configured to homogenize values of the illumination properties in a plurality of spatial regions of the display panel that include the first and second spatial regions, and implemented in the display device.

公开(公告)号：US10133120B2

公开(公告)日：2018-11-20

申请号：US15726199

申请日：2017-10-05

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chun Chi Wan ,  Ajit Ninan

IPC: G09G3/36 ,  G02F1/1335 ,  G09G3/34

Abstract: Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine transmission of the second light through individual color subpixels of the display. These LCD modulation drive signals can be adjusted based on one or more light field simulations to account for non-uniform, spatial color shifts. Alternatively, one or more light field simulations based on a uniformity assumption determine intermediate LCD modulation drive signals. A compensation field simulation, using backlight drive signals, is then used to adjust the intermediate LCD modulation drive signal for color correction.

公开(公告)号：US09940881B2

公开(公告)日：2018-04-10

申请号：US14370115

申请日：2014-02-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ajit Ninan ,  Chun Chi Wan

IPC: G09G3/34 ,  G09G3/36 ,  H05B33/08 ,  G09G3/32 ,  G02F1/1335

CPC classification number: G09G3/36 ,  G02F2001/133601 ,  G02F2001/133614 ,  G02F2202/36 ,  G09G3/32 ,  G09G3/3413 ,  G09G3/342 ,  G09G3/3426 ,  G09G2310/0237 ,  G09G2320/0233 ,  G09G2320/0242 ,  H05B33/086 ,  H05B33/0866

Abstract: Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light into second light. The light conversion layer can include quantum dots or phosphor materials. Modulation drive signals are generated to determine transmission of the second light through individual subpixels of the display. These modulation drive signals can be adjusted based on one or more light field simulations. The light field simulations can include: (i) a color shift for a pixel based on a point spread function of the illumination sources; (ii) binning difference of individual illumination sources; (iii) temperature dependence of display components on performance; or (iv) combinations thereof.

公开(公告)号：US09644804B2

公开(公告)日：2017-05-09

申请号：US14659931

申请日：2015-03-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan

IPC: F21V9/08 ,  F21K9/64 ,  G09G3/22 ,  G02B27/22 ,  G09G3/00 ,  G09G3/02 ,  G09G5/14 ,  G02B26/08 ,  G09G3/34 ,  H04N9/31 ,  B82Y20/00

CPC classification number: F21K9/64 ,  B82Y20/00 ,  F21V9/08 ,  G02B26/08 ,  G02B27/2207 ,  G02B27/2264 ,  G09G3/001 ,  G09G3/003 ,  G09G3/02 ,  G09G3/025 ,  G09G3/22 ,  G09G3/34 ,  G09G5/14 ,  G09G2310/0235 ,  H04N9/3129

Abstract: Modulated light sources are described. A modulated light source may have first light sources that are configured to emit first light, which has first color components that occupy a range that is beyond one or more prescribed ranges of light wavelengths. The modulated light source may also have a light converter that is configured to be illuminated by the first light. The light converter converts the first light into second light. The second light has one or more second color components that are within the one or more prescribed ranges of light wavelengths. Strengths of the one or more second color components in the second light are monitored and regulated to produce a particular point within a specific color gamut.

公开(公告)号：US09549123B2

公开(公告)日：2017-01-17

申请号：US14710856

申请日：2015-05-13

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Gregory John Ward ,  Qifan Huang

IPC: H04N5/232 ,  H04N5/235 ,  H04N5/345 ,  H04N9/04 ,  H04N5/222 ,  H04N5/265 ,  G06K9/46

CPC classification number: H04N5/23245 ,  G06K9/4652 ,  H04N5/222 ,  H04N5/2353 ,  H04N5/2355 ,  H04N5/265 ,  H04N5/3456 ,  H04N9/045

Abstract: Techniques are described to combine image data from multiple images with different exposures into a relatively high dynamic range image. A first image of a scene may be generated with a first operational mode of an image processing system. A second image of the scene may be generated with a second different operational mode of the image processing system. The first image may be of a first spatial resolution, while the second image may be of a second spatial resolution. For example, the first spatial resolution may be higher than the second spatial resolution. The first image and the second image may be combined into an output image of the scene. The output image may be of a higher dynamic range than either of the first image and the second image and may be of a spatial resolution higher than the second spatial resolution.

Abstract translation: 描述技术来将来自多个图像的图像数据与不同曝光组合成相对高的动态范围图像。 可以利用图像处理系统的第一操作模式来生成场景的第一图像。 可以利用图像处理系统的第二不同操作模式来生成场景的第二图像。 第一图像可以是第一空间分辨率，而第二图像可以是第二空间分辨率。 例如，第一空间分辨率可以高于第二空间分辨率。 第一图像和第二图像可以被组合成场景的输出图像。 输出图像可以具有比第一图像和第二图像中的任一个更高的动态范围，并且可以具有高于第二空间分辨率的空间分辨率。